Ragan MA-Discovery(ies) Genus / Species Journal Year Volume Page Ascophyllum nodosum Phytochem. 1979 18 261 Chorda filum Phytochem. 1979 18 261 Chordaria flagelliformis Phytochem. 1979 18 261 Dictyota dichotoma Phytochem. 1979 18 261 Fucus distichus Phytochem. 1979 18 261 Fucus serratus Phytochem. 1979 18 261 Fucus vesiculosus Phytochem. 1979 18 261 Himanthalia elongata Phytochem. 1979 18 261 Laminaria digitata Phytochem. 1979 18 261 Laminaria hyperborea Phytochem. 1979 18 261 Laminaria saccharina Phytochem. 1979 18 261 Pelvetia canaliculata Phytochem. 1979 18 261 Petalonia fascia Phytochem. 1979 18 261 Pylaiella littoralis Phytochem. 1979 18 261 Scytosiphon lomentaria Phytochem. 1979 18 261 Spongonema tomentosum Phytochem. 1979 18 261